4.6 Article

Substituent Effects in Kaolinite Flotation Using Dodecylamine: Experiment and DFT Study

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Chemical

Comparison between etheramine and amidoamine (N-[3-(dimethylamino) propyl]dodecanamide) collectors: Adsorption mechanisms on quartz and hematite unveiled by molecular simulations

Klaydison Silva et al.

Summary: This study reveals the differences in adsorption between etheramine and amidoamine N-[3(dimethylamino)propyl]dodecanamide in industrial iron ore flotation at a molecular level. Molecular dynamics simulations show that amidoamine has a more selective adsorption on the quartz surface compared to etheramine. The selective adsorption is attributed to the combination of water coordination at the hematite-(D2) surface and the bulky head group of amidoamine. Neutral molecules of etheramine and amidoamine are shielded by water coordination at the hematite-(D2) surface, making adsorption difficult. Protonated collector molecules of amidoamine experience steric hindrance due to the combination of the bulky head group and water on the hematite-(D2) surface, impairing adsorption. However, etherammonium cations can still adsorb on the hematite surface. Additionally, hydrogen bonding between collectors is favored by the amide group, contributing to the stability of the adsorption layer.

MINERALS ENGINEERING (2022)

Article Engineering, Chemical

Effect of active substance content and molecular weight of petroleum sulfonate on fluorite flotation: Molecular dynamics simulation

Zengzi Wang et al.

Summary: This study evaluates the effects of different types of sodium petroleum sulfonate on the flotation recovery of fluorite, finding that the active substance content has a positive effect while the molecular weight plays a negative role. The relatively weak performance of di-sulfonate at high concentration is attributed to the steric-hindrance effect, limiting tail-tail interaction between sulfonates.

MINERALS ENGINEERING (2021)

Article Engineering, Chemical

Experimental and molecular dynamics simulation study on the effect of polyacrylamide on bauxite flotation

Ziyong Chang et al.

Summary: The study showed that polyacrylamide (PAM) has a significant impact on bauxite flotation, with high concentrations reducing recovery and selectivity. PAM may hinder collector adsorption and cause unselective flocculation. Hexametaphosphate can mitigate the negative effects of PAM and improve flotation performance.

MINERALS ENGINEERING (2021)

Article Materials Science, Multidisciplinary

Polyacrylic Acid to Improve Flotation Tailings Management: Understanding the Chemical Interactions through Molecular Dynamics

Gonzalo R. Quezada et al.

Summary: The study found that the interaction between PAA and mineral surfaces varies under different salt concentrations, with salinity impacting the adsorption effects on different systems, and montmorillonite showing the strongest adsorption.

METALS (2021)

Article Engineering, Chemical

Design and synthesis of novel polyamine collector to recover iron values from iron ore slimes

Abhay Shankar Patra et al.

POWDER TECHNOLOGY (2018)

Article Chemistry, Multidisciplinary

Prediction of Hydrophobic Reagent for Flotation Process Using Molecular Modeling

Mohamed A. M. Abdalla et al.

ACS OMEGA (2018)

Article Engineering, Chemical

Flotation of fine kaolinite using dodecylamine chloride/fatty acids mixture as collector

Liang Shen et al.

POWDER TECHNOLOGY (2017)

Article Chemistry, Physical

Molecular dynamics simulation of siderite-hematite-quartz flotation with sodium oleate

Lixia Li et al.

APPLIED SURFACE SCIENCE (2017)

Article Chemistry, Physical

Removal of fine quartz from coal-series kaolin by flotation

Xiangning Bu et al.

APPLIED CLAY SCIENCE (2017)

Proceedings Paper Mineralogy

Flotation of kaolinite from tailings of kaolin-washing plants by cationic collectors

Kianoush Barani

MINERAL ENGINEERING CONFERENCE (MEC2016) (2016)

Article Chemistry, Physical

Adsorption of guanidinium collectors on aluminosilicate minerals - a density functional study

Naga Venkateswara Rao Nulakani et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2015)

Article Geochemistry & Geophysics

Effects of particle size and chain length on flotation of quaternary ammonium salts onto kaolinite

Xu Longhua et al.

MINERALOGY AND PETROLOGY (2015)

Article Mining & Mineral Processing

Flotation and adsorption of quaternary ammonium salts collectors on kaolinite of different particle size

Jiang Hao et al.

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY (2013)

Article Engineering, Chemical

The behavior of N,N-dipropyl dodecyl amine as a collector in the flotation of kaolinite and diaspore

Changmiao Liu et al.

MINERALS ENGINEERING (2011)

Article Metallurgy & Metallurgical Engineering

Flotation of kaolinite with dodecyl tertiary amines

Cao Xue-feng et al.

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY (2009)

Article Engineering, Chemical

Substituent effects in kaolinite flotation using dodecyl tertiary amines

Changmiao Liu et al.

MINERALS ENGINEERING (2009)

Article Metallurgy & Metallurgical Engineering

Flotation of kaolinite and diaspore with hexadecyl dimethyl benzyl ammonium chloride

Hu Yue-hua et al.

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY (2008)

Article Metallurgy & Metallurgical Engineering

Synthesis of N,N-diethyl dodecyl amine and its flotation properties on bauxite

Cao Xue-feng et al.

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY (2008)

Article Metallurgy & Metallurgical Engineering

Synthesis of γ-alkoxy-propylamines and their collecting properties on aluminosilicate minerals

XF Cao et al.

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY (2004)

Article Engineering, Chemical

Molecular modeling and rational design of flotation reagents

Pradip et al.

INTERNATIONAL JOURNAL OF MINERAL PROCESSING (2003)

Article Engineering, Chemical

Electrokinetic behavior and flotation of kaolinite in CTAB solution

Y Hu et al.

MINERALS ENGINEERING (2003)